package com.bondex.charter.service.utils;

//Tdjson解析将件数转成英文
public class NumberParser {
    public static void main(String[] args) {
        System.out.println(NumberParser.parse("2377"));
    }
    public static String parse(String x) {
        int z = x.indexOf("."); // 取小数点位置
        String lstr = "", rstr = "";
        if (z > -1) { // 看是否有小数，如果有，则分别取左边和右边
            lstr = x.substring(0, z);
            rstr = x.substring(z + 1);
        } else // 否则就是全部
            lstr = x;
        String lstrrev = reverse(lstr); // 对左边的字串取反
        String[] a = new String[5]; // 定义5个字串变量来存放解析出来的叁位一组的字串
        switch (lstrrev.length() % 3) {
            case 1:
                lstrrev += "00";
                break;
            case 2:
                lstrrev += "0";
                break;
        }
        String lm = ""; // 用来存放转换後的整数部分
        for (int i = 0; i < lstrrev.length() / 3; i++) {
            a[i] = reverse(lstrrev.substring(3 * i, 3 * i + 3)); // 截取第一个叁位
            if (!a[i].equals("000")) { // 用来避免这种情况：1000000 = one million thousand only
                if (i != 0)
                    lm = transThree(a[i]) + " " + parseMore(String.valueOf(i)) + " " + lm; // 加:
                else
                    lm = transThree(a[i]); // 防止i=0时， 在多加两个空格.
            } else
                lm += transThree(a[i]);
        }
        String xs = ""; // 用来存放转换後小数部分
        if (z > -1)
            xs = "AND CENTS " + transTwo(rstr) + " "; // 小数部分存在时转换小数
        //return lm.trim() + " " + xs + "ONLY";
        return lm.trim() + " " + xs;
    }

    private static String parseFirst(String s) {
        String[] a =
                new String[]{"", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE"};
        return a[Integer.parseInt(s.substring(s.length() - 1))];

    }

    private static String parseTeen(String s) {

        String[] a =

                new String[]{

                        "TEN",

                        "ELEVEN",

                        "TWELEVE",

                        "THIRTEEN",

                        "FOURTEEN",

                        "FIFTEEN",

                        "SIXTEEN",

                        "SEVENTEEN",

                        "EIGHTEEN",

                        "NINETEEN"};

        return a[Integer.parseInt(s) - 10];

    }

    private static String parseTen(String s) {

        String[] a =

                new String[]{

                        "TEN",

                        "TWENTY",

                        "THIRTY",

                        "FORTY",

                        "FIFTY",

                        "SIXTY",

                        "SEVENTY",

                        "EIGHTY",

                        "NINETY"};

        return a[Integer.parseInt(s.substring(0, 1)) - 1];

    }

// 两位

    private static String transTwo(String s) {

        String value = "";

// 判断位数

        if (s.length() > 2)

            s = s.substring(0, 2);

        else if (s.length() < 2)

            s = "0" + s;

        if (s.startsWith("0")) // 07 - seven 是否小於10

            value = parseFirst(s);

        else if (s.startsWith("1")) // 17 seventeen 是否在10和20之间

            value = parseTeen(s);

        else if (s.endsWith("0")) // 是否在10与100之间的能被10整除的数

            value = parseTen(s);

        else

            value = parseTen(s) + " " + parseFirst(s);

        return value;

    }

    private static String parseMore(String s) {

        String[] a = new String[]{"", "THOUSAND", "MILLION", "BILLION"};

        return a[Integer.parseInt(s)];

    }

// 制作叁位的数

// s.length = 3

    private static String transThree(String s) {

        String value = "";

        if (s.startsWith("0")) // 是否小於100

            value = transTwo(s.substring(1));

        else if (s.substring(1).equals("00")) // 是否被100整除

            value = parseFirst(s.substring(0, 1)) + " HUNDRED";

        else

            value = parseFirst(s.substring(0, 1)) + " HUNDRED AND " + transTwo(s.substring(1));

        return value;

    }

    private static String reverse(String s) {

        char[] aChr = s.toCharArray();

        StringBuffer tmp = new StringBuffer();

        for (int i = aChr.length - 1; i >= 0; i--) {

            tmp.append(aChr[i]);

        }

        return tmp.toString();

    }
}
